How do I toggle the view between perspective/orthographic with out a numpad in 2.8?
There are 2 addons bundled with Blender called UI Pie Menu Official or alternatively 3D Viewport Pie Menus (for both 2.79 and 2.8). When enabled they provide list of menus you can call through pie menu, View Numpad Pie as one of them. Both of them have Persp/Ortho switch, though in second-level menu (first you need to hover over View Menu and click it, then click to execute perspective switch).



Depending on the addon perspective switch will be either under another level of pie menu or submenu of the currently chosen pie menu item.
Only nuance is that in 2.8 position of items in pie menus changed, so that in 2.79 View Menu is on the left, in 2.8 - on the right. If you use both versions you might need to adapt to that.